Hi Chrissy. I received this a while ago in the Mary Kay VoxBox and it's not that impressive. It doesn't make your mascara last any longer or shorter than usual. While it does make your lashes appear to be longer, it doesn't give me anything I can't get in another mascara that is advertised as a lengthening mascara. I choose not to purchase an additional primer if I can get lengthened lashes all in one product. I'd advise spending your money on a good lengthening mascara (if length is what you're looking for) instead of spending money on both a mascara and a primer.